Assertion : Eye lens has the ability to focus clearly on the retina by adjusting its focal length.
Reason : This phenomenon is known as power of accommodation.

Options

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).
C. Assertion (A) is true but reason (R) is false.
D. Assertion (A) is false but reason (R) is true.